<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Hello React!</title>
    <script src="./react.min.js"></script>
    <script src="./react-dom.min.js"></script>
    <script src="https://cdn.bootcss.com/babel-standalone/6.22.1/babel.min.js"></script>
  </head>
  <body>
     <div id="example"></div>
    <script type="text/babel">
    //var title = "菜鸟教程";
     var title = 123;
    var MyTitle = React.createClass({
      propTypes: {
        title: React.PropTypes.string.isRequired,
      },

      render: function() {
         return <h1> {this.props.title} </h1>;
       }
    });
    ReactDOM.render(
        <MyTitle title={title} />,
        document.getElementById('example')
    );
    </script>
  </body>
</html>